SubStation HIUs are pre-engineered, factory-assembled heat exchange package plants used predominantly in district heating networks. They are designed to deal with large flows, such as those associated with whole blocks of apartments. 

Each assembly is mounted on a robust frame, which simplifies handling arrangements at site. The layout of components makes them easily accessible for maintenance operations. 

Each unit is tested at works, so that installation is easy to plan. Sufficient instrumentation is provided for operational control and to enable commissioning to be carried out effectively.